Coke-oven gas-main valve



June 16, 1925.

Filed Aug. 31, 1921 Patented June 16, 1925.-

' UNITED STATES PATENT OFFICE.

HEINRICH KOPPERS, OF ESSEN-RUHR, GERMANY, ASSIGNOR TO TEE KOPPERS'JDE VELOPMENT CORPORATION, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

COK IlI'l-OVEN GAS-MAIN VALVE.

Application filed August 81, 1921. Serial No. 497,382.

' convenient and quick the inspection and cleaning and change of the valve and valve seat and to make the valve seat removable while it is at the same time provided with readily manipulatable means for holding it ti 'htly in place.

Particularly' in connection with coal rich in tar is it impossible to avoid a soiling of the valve disc and the valve seat in the stop valves for the dry receiver of chamber ovens for producing gas and coke, so that irksome cleaning work-has to be carried out, since the tar becomes hard and is diificult to remove.

Now, it is well known that these tar deposits may be reduced by not letting the valve disc bear from above against its valve seat but on the contrary by pressing it against the valve seat from below. In this matter the valve disc and valve seat come to lie in the gas space of the receiver where the valve joint surfaces are always washed about by saturated gases, so that the incrustation by tar is kept down. 7

By the present inventionthe disadvantage incident to an upwardly closing valve, which consistsof the necessity of taking off the entire valve box for inspecting and changing the'valve disc or the valve seat, is eliminated. The solution of the problem involved in this connection is in giving such dimensions to the valve seat against which the valve disc presses from below, and in fasteningit to the box in so conveniently detachable a manner that it can be taken off if need be and pulled out upwardly, whereby the advantage of free accessibility and removal is afforded to the valve. While therefore, in such a valve the disc and seat are not exposed to incrustation at all or to as great an extent as in the valves pressed on their seat from above, the exchange of valve seat and disc can be carried out just as simply when occasion arises.

In the drawing an example of embodiment of the said invention is shown by a vertical section.

a 00 Referring to the drawing, on the receiver -a usually made of wrought iron, the valvev case or box I) is placed, which is connected by a connecting piece 0 with the riser pipe 1' on top of the oven. At thebottom of the 65 ase b the valve seat dis fastened by screws e, projecting, after the fashion of a. pipe connection, into the interior of the receiver a and pressed against upwardly and outwardly by the valve cone 7, which can be raised and lowered with theaid of the rod g. The valve seat d is thus a ring which is loose when the screws e are backed out. The attachment of the seat d can be effected in different manners; the best way is as shown in 7 the drawing by means ofobliquely placed pressure screws e, operable from the outside, not unlikethe manner in which the ,valve seats are attached in pumps.

The valve rod is 'led to the, outside through the lid k and can be tightened against its seat with the aid of the wedge z in the final position of the valve. Said wedge passes through a hole in the rod 9. In order to keep, the valve rod itself as free so from incrustatlon as possible in this connection, a chamber is is provided in the lid of the valve case for receiving oil. In order to obtain a means of cutting olf the riser pipe from thereceiver during the time of exchanging the valve seat (I and the valve cone 7, a slot Z is provided in the flange of the box 12 into which, when occasion arises a sheet metal slide m can be inserted.

What is claimed is- 1. A stop valve for the dry receiver in chamber, ovens for producing gas and coke, with a removable lid for the valve case and the valve cone pressing outward against the valve seat, characterized by the valve seat (I bein so dimensioned and fastened that it can conveniently withdrawn outwardly after disconnecting its attachment to the valve case and the lid h is removed, so as to make easy replacements possible.

2. A. sto valve for dryreceivers in chamber ovens or producing gas and coke, comprising, in combination with the casing box and valve-seat, a cover for the box, a valve cone pressin outwardl against its valve seat, said va ve seat bemg adapted for removal through the, casing box after the cover of said box is removed, said valve seat being removably secured in place by obliquely inclined pressure screws that are adjustable from the outside of said box.

3. A sto valve fordry receivers in chamber ovens ibr producing gas and coke, comprising, in combination with the casing box and valve seat, a cover for the box, a Valve cone pressing outwardly against its valve seat, said valve seat being adapted for removal throu h the casing box after the cover of said ox is removed, said valve seat being removably secured in" place by obliquely inclined pressure screws that are adjustable from the outside of said box, and a rod for moving saidnalve cone and an oil chamber in said box cover through which said rod extends.

4. A stop valve for dry receivers in chamber ovens for producing gas and coke, comprising, in combination with the casing box and valve seat, a cover for the box, a valve cone pressing outwardly against its valve seat, said valve seat being adapted for removal through the casing box after the cover of said box is removed, said valve seat being removably secured in place by obliquely inclined pressure screws that are adjustable from the outside of said casing box, and a slot in the box casing adapted to receive a sheet metal slide after the valve seat is removed in order to close the opening between the receiver and the casing box.

5. In a stop valve construction for the dry receivers of ovens, the combination of a valve box having means for attachment to the receiver and oven, and having a removable top, a valve seat removably seated in said box, means operable from outside the box for tightly securing and for releasing said valve seat, a valve adapted to bear against the under side of the valve seat, and a rod connected with the valve and passing through the top of the bQX.

6. In .a stop valve constrnbtion for the dry receivers of ovens, the combination of a valve box having means for attachment to the receiver and oven and having a removable top, a valve seat removably mounted in said box and adapted to extend down within said receiver, means for tightly securing and releasing said valve seat, a valve adapted to bear against the lower end of the valve seat, and means for operating said valve.

7. Ina stop valve construction for the dry receivers of ovens, the combination of a valve box having means for attachment to the receiver and oven and having a removable to provided with an oil chamber, a valve and valve seat in the lower part of said box, and a valve operating rod attached to the valve and passing through said oil chamber to the outer side of said cover.

'8. A stop valve 'for dry receivers in chamber ovens for producing gas and coke, comprising, in combination with the casing box and valve seat, and a cover for the box, a valve cone pressing outwardly against its valve seat, said valve seat being adapted for removal through the casing box after the cover of said casing box is removed, said valve seat beingremovably secured in place by screws that are adjustable from the outside of said casing box, and a sheet metal slide adapted to be inserted in a slot after the valve seat is removed in order to close the opening between the receiver and the casing box.

9. A stop valve for dry receivers in ovens for producing coke and gas, comprising, in'combination: a casing; a valve seat removably secured to said casing; and a valve adapted to press outwardly against said seat.

10. A stop valve for dry receivers in ovens for producing gas and coke, comprising, in combination: a casing; a valve seat removably secured to said casing; said valve seat adapted to extend into said receiver when secured in place; and a valve cone adapted to press outwardly against'said seat.

11. A stop valve for receivers in ovens for producing gas and coke, comprising, in combination: a casing; a valve seat removably secured Within said casing, the seat portion of said valve beingarranged within said receiver when secured in place; and avalve cone adapted to press outwardly against sa1d seat.

HEINRICH KOPPERS. 

